The pair appear to have enjoyed spending time together despite ending their relationship for the final time earlier this year.

The pair even spoke recently about how their romantic history helped them when they were filming Going The Distance, a story about a couple who try to make a long-distance relationship work.

Ready to party: Barrymore appeared fresh-faced despite her hectic promotional schedule this week

She said: 'I loved getting to do a film with someone that I do have a history with and we could bring a tremendous amount of honesty to it. We sort of saw that as a surreal opportunity and maybe it will feel a little more relatable-to because it is kind of real.'

Long added: 'The truth is, we do love each other. I pray to God she's always in my life. We were friends before this, and at the heart of what we are and will be is friends. Two good, really dear friends, and that trumps anything else.'

Close: The couple are believed to have split for the last time earlier this year, but were happy to hug on the red carpet this week